In trading on Friday, shares of the EGShares Emerging Markets Energy ETF ( EMT) entered into oversold territory, changing hands as low as $8.5801 per share. We define oversold territory using the Relative Strength Index, or RSI, which is a technical analysis indicator used to measure momentum on a scale of zero to 100. A stock is considered to be oversold if the RSI reading falls below 30.In the case of EGShares Emerging Markets Energy, the RSI reading has hit 28.1 — by comparison, the RSI reading for the S&P 500 is currently 49.9. A bullish investor could look at EMT's 28.1 reading as a sign that the recent heavy selling is in the process of exhausting itself, and begin to look for entry point opportunities on the buy side. Looking at a chart of one year performance (below), EMT's low point in its 52 week range is $8.5801 per share, with $15.20 as the 52 week high point — that compares with a last trade of $8.58. EGShares Emerging Markets Energy shares are currently trading down about 1.9% on the day.